Mon Jul 10, 2017 4:53 pm
Tom, the short answer is yes* the main lobby of the original terminal at DCA is still open and accessible to the public. There are still seats in the lobby and it provides a great view of the ramp area and runways. Also, I have noticed that very few people pass through the lobby since most folks go directly to the area serviced by their airline; i.e., Terminal A for Southwest, Air Canada, Frontier, and Sun Country, and Terminals B/C for all the other carriers. As a result, the original lobby is generally a nice and peaceful area just to sit back, relax, and enjoy the activity without interference from lots of other people. Of course, the original observation deck is not accessible; but the view is unobstructed and is very good and the area where the ticket counters were is now a wall with aerial photos of the airport through multiple stages of its development. The restaurant, of course, is also closed.
However . . . (and the reason for the asterisk), sometimes the lobby is closed off by a simple curtain with a sign that says, "Lobby closed for special event." in which case there is a by-pass corridor connecting Terminal A with Terminals B/C.
The problem can be that these events tend to be unannounced (although you may be able to contact someone at MWAA to determine if the lobby will be open or closed on a particular day). For example, when MWAA announced the expansion of Terminal C to the north, there was a big reception in the lobby, and periodically, I have seen the lobby used for military/USO/veterans receptions and special events.
I hope this helps.
e38